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dalvyx [7]
3 years ago
13

Will give Brainliest. Can someone PLEASE Help Me!? I'm really confused and don't get half of this stuff and really need some hel

p.
How would you correct the proof in Question 2?

Rewrite the proof as a two-column proof, write your statements and reasons with S#) and R#) like so:

S1) Statement R1) Reason
S2) Statement R2) Reason
S3) Statement R3) Reason

(see column proof below)


Statements Reasons
1 (9+2i)(3−5i)−(9+i)(3−5i)(9+2i)(3−5i)−(9+i)(3−5i) Given
2 (3−5i)(9+2i−9+i)(3−5i)(9+2i−9+i) Factor out (3−5i)(3−5i).
3 (3−5i)(9−9+2i+i)(3−5i)(9−9+2i+i) Commutative Property of Addition
4 (3−5i)(3i)(3−5i)(3i) Combine like terms.
5 3(3i)−5i(3i)3(3i)−5i(3i) Distributive Property
6 9i−15i29i−15i2 Simplify.
7 9i−15(−1)9i−15(−1) Substitution (i2=−1)(i2=−1).
8 9i+159i+15 Simplify.
9 15+9i15+9i Commutative Property of Addition
Mathematics
1 answer:
galina1969 [7]3 years ago
4 0

Can you provide a photo

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guajiro [1.7K]

Answer:

<h2>252 mi</h2>

Step-by-step explanation:

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Step-by-step explanation:

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\begin{aligned}&\text {Revenue, } \mathrm{R}(\mathrm{x})=(90+5 \mathrm{x})(140-7 \mathrm{x}) \\&R^{\prime}(x)=5(140-7 x)-7(90+5 x) \\&R^{\prime}(x)=700-35 x-630-35 x \\&R^{\prime}(x)=70-70 x=0 \\&70 x=70 \\&x=1\end{aligned}

Therefore, if the price becomes (90 + 5(1)) = $95 per wind chime, then the revenue will be maximum

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